应该怎么改呢?

import javax.media.*;
import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.net.MalformedURLException;
public class SimpleAudioPlayer {
private Player audioPlayer = null;
public SimpleAudioPlayer(URL url) throws IOException,NoPlayerException,CannotRealizeException {
audioPlayer = Manager.createRealizedPlayer(url);
}

public SimpleAudioPlayer(File file) throws IOException,NoPlayerException,CannotRealizeException {
this(file.toURL());
}
Realized player：
audioPlayer = Manager.createRealizedPlayer(url);
public void play() {
audioPlayer.start();
}
public void stop() {
audioPlayer.stop();
audioPlayer.close();
}
public static void main(String [] args){
File audioFile = new File(args[0]);
SimpleAudioPlayer player = new SimpleAudioPlayer(audioFile);
player.play();
player.stop();